Contact for incandescent-lamp bases, &amp;c.



No. 65!,695. Patented June [2, 1900.

W. C. BRYANT.

CONTACT FOB INCANDESCENT LAMP BASES, 8w.

(Application filed Dec. 18, 1898.)

(No Model.) 7

/ Fll.

yNESSES: INVENTOR HISATTORN EYS UNITED STATES PATENT OFFICE.

\VALDO C. BRYANT, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELECTRIC COMPANY, OF SAME PLACE.

CONTACT FOR INCANDESCENT-LAMP BASES, 840.

SPECIFICATION forming part of Letters Patent No. 651,695, dated June 12, 1900. Application filed December 13, 1898. .Serial No. 699,150. (No model.)

To all whom it may concern.-

Be it known that I, WALDO C. BRYANT, a citizen of the United States of America, residing in Bridgeport, Fairfield county, State of Connecticut, have invented an Improved Contact for Incandescent-Lamp Bases, &c.,'

of which the following is a specification.

The object of my invention is to make a simple and efficient contact for incandescentlamp bases, plugs, receptacles, &c., more particularly of the Edison type and of that class in which porcelain or like insulating buttons or bodies are employed instead of plaster.

In the accompanying drawings, Figure 1 is a sectional View of my improved contactpiece and the porcelain button or body before the two are united. Fig. 2 is a sectional View of a lamp base or plug provided with my invention, and Fig. 3 is a sectional View of a socket or receptacle to illustrate the application of my invention thereto.

In Figs. 2 and 3 I have shown my invention as applied to a lamp base and receptacle of the Edison type, A being the screw-shell, of brass, which forms one of the terminals, and B being the bottom contact, which forms the other terminal. My invention has more particular reference to the construction of this bottom contact. Heretofore it has been made of two pieces of brass riveted together. For the sake of. simplicity and economy and to give a uniform and more eflicient con tact-surface I make the contact-piece of a single piece of sheet metal comprising atubular portion 5, considerably longer than the opening in the insulating-button through which it passes, an outwardlyprojecting flange b and a rearwardly-projecting flange b, all of one piece of sheet metal. The tubular portion 12 is passed through the eye cl of the porcelain or other button or body D, Fig. 1, and has its small end flanged over into a recess d in the porcelain. The rearwardlyprojecting flange 12 of the enlarged head at the other end of the tube bears against the opposite face of the porcelain.

I claim as my invention.

In an incandescent-lamp base, socket, &c., the combination of an insulating-body having an opening, with a contact, consisting of a tubular portion passing through said opening'and secured thereto by flanging one end of the tube, and an outwardlyprojecting flange b at the other end, with a rearwardlyprojecting flange Z) to bearagainst the insulating-body, the flanges being in one with the tube, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. I

WALDO C. BRYANT.

Witnesses:

F. W. WRIGHT, W. R. BEACH. 

